JPH0592538U - Roller bearing - Google Patents

Roller bearing

Info

Publication number
JPH0592538U
JPH0592538U JP3845792U JP3845792U JPH0592538U JP H0592538 U JPH0592538 U JP H0592538U JP 3845792 U JP3845792 U JP 3845792U JP 3845792 U JP3845792 U JP 3845792U JP H0592538 U JPH0592538 U JP H0592538U
Authority
JP
Japan
Prior art keywords
roller
lubricant
hollow
rollers
grease
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP3845792U
Other languages
Japanese (ja)
Inventor
藤井  健次
康宏 清水
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NTN Corp
Original Assignee
NTN Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by NTN Corp filed Critical NTN Corp
Priority to JP3845792U priority Critical patent/JPH0592538U/en
Publication of JPH0592538U publication Critical patent/JPH0592538U/en
Pending legal-status Critical Current

Links

Abstract

(57)【要約】 【目的】 封入潤滑剤の微量供給が行えて、初期発熱の
防止と潤滑寿命の向上とが図れるものとする。 【構成】 ころ4Aを中空して内部空間5にグリース等
の潤滑剤を充填する。この中空ころ4Aの端面の開口部
に、嵌め合い面7が潤滑剤の流出路となるキャップ6を
圧入させる。中空ころ4Aは、内輪1と外輪2間に組込
まれる一部のころであっても全部のころであっても良
い。キャップ6の嵌め合い面7は、加工仕上げの面粗さ
による凹凸のために微小な隙間が形成されている。この
隙間から潤滑剤またはその成分が、中空ころ4Aの自転
や公転による遠心力と、毛細管現象等でころ端面に滲み
出し、軸受内各部の潤滑に利用される。
(57) [Summary] [Purpose] A small amount of enclosed lubricant can be supplied to prevent initial heat generation and improve the lubricating life. [Structure] The roller 4A is hollow and the internal space 5 is filled with a lubricant such as grease. The cap 6 having the fitting surface 7 serving as a lubricant outflow passage is press-fitted into the opening of the end surface of the hollow roller 4A. The hollow rollers 4A may be some or all of the rollers incorporated between the inner ring 1 and the outer ring 2. The fitting surface 7 of the cap 6 has a minute gap due to the unevenness due to the surface roughness of the finished work. From this gap, the lubricant or its component oozes out to the roller end surface due to the centrifugal force due to the rotation or revolution of the hollow roller 4A and the capillary phenomenon, and is used for the lubrication of each part in the bearing.

Description

【考案の詳細な説明】[Detailed description of the device]

【0001】[0001]

【産業上の利用分野】[Industrial applications]

この考案は、グリース等の潤滑剤を運転に伴って自然供給する円筒ころ軸受等 のころ軸受に関するものである。 The present invention relates to a roller bearing such as a cylindrical roller bearing, which naturally supplies a lubricant such as grease during operation.

【0002】[0002]

【従来の技術】[Prior Art]

一般のグリース潤滑のころ軸受では、軌道輪に組込まれた全個数のころにグリ ースが塗布されている。この方式では、運転初期にグリースが多すぎるため、攪 拌抵抗によって発熱が大きくなる。そのため、発熱を低いレベルに落ち着かせる ために、なじみ運転が必要になる。また、グリースの拡散も大きいため、定めら れた期間毎にグリース補給が行われている。特に、工作機械に使用するような場 合、軸受における発熱は加工精度に影響するため、発熱を極力低下させる必要が ある。 In general grease-lubricated roller bearings, grease is applied to all the rollers incorporated in the bearing ring. With this method, the amount of grease is too much in the initial stage of operation, so heat generation increases due to stirring resistance. Therefore, familiar operation is required to calm the heat generation to a low level. In addition, since grease spreads widely, grease is replenished at regular intervals. Especially when used in machine tools, heat generation in bearings affects machining accuracy, so it is necessary to reduce heat generation as much as possible.

【0003】 このような初期発熱とグリース補給の欠点を改善するため、各ころを端面が開 口した中空形状とし、内部にグリースを充填したものが提案されている。これに よれば、ころ内に充填されたグリースが運転に伴って自然供給され、グリースを 無補給で運転できる期間が長くなる。In order to improve such drawbacks of initial heat generation and grease replenishment, it has been proposed that each roller has a hollow shape with an open end and grease is filled inside. According to this, the grease filled in the rollers is naturally supplied during the operation, and the period during which the grease can be operated without replenishment becomes longer.

【0004】[0004]

【考案が解決しようとする課題】[Problems to be solved by the device]

しかし、前記の中空ころでは、ころ内のグリースはころ端面の開口から流出す るため、流出流量が大きくなりすぎ、ころ内から供給されたグリースが有効に潤 滑に利用されずに拡散してしまう。そのため、グリースを無補給で運転できる期 間を充分に長くすることができない。 However, in the hollow roller described above, the grease inside the roller flows out from the opening on the roller end face, so the outflow rate becomes too large, and the grease supplied from inside the roller diffuses without being effectively used for lubrication. I will end up. Therefore, it is not possible to sufficiently lengthen the period during which the grease can be operated without replenishment.

【0005】 この考案の目的は、封入潤滑剤の微量供給が行えて、初期発熱の防止と、潤滑 剤の無補給運転期間の向上とが図れるころ軸受を提供することである。An object of the present invention is to provide a roller bearing capable of supplying a small amount of an enclosed lubricant, preventing initial heat generation, and improving a period during which no lubricant is replenished.

【0006】[0006]

【課題を解決するための手段】[Means for Solving the Problems]

この考案のころ軸受は、ころを中空として内部空間に潤滑剤を充填し、この中 空ころの端面の開口部にキャップを圧入させたものである。キャップの外径の嵌 め合い面が潤滑剤の流出路となる。中空ころは、内輪と外輪間に組込まれる一部 のころであっても全部のころであっても良い。 In the roller bearing of the present invention, the roller is hollow, the inner space is filled with a lubricant, and the cap is press-fitted into the opening of the end surface of the hollow roller. The mating surface of the outer diameter of the cap serves as the lubricant outflow passage. The hollow rollers may be some or all of the rollers incorporated between the inner ring and the outer ring.

【0007】[0007]

【作用】[Action]

軸受が回転すると、ころの自転や公転による遠心力と、毛細管現象とにより、 ころ内の潤滑剤またはその成分が、ころの開口部とキャップとの嵌め合い面を通 り、ころ端面に滲み出して来る。滲み出した潤滑剤またはその成分は、軸受内に 飛散して各部の潤滑に寄与する。このように、嵌め合い面で潤滑剤の流出量の絞 り効果が得られて、潤滑剤の微量供給が行われるため、長期にわたる潤滑剤の供 給が可能となる。 When the bearing rotates, the lubricant in the roller or its components passes through the mating surface between the roller opening and the cap and oozes out to the roller end surface due to the centrifugal force due to the rotation and revolution of the roller and the capillary phenomenon. Come on. The lubricant or its components that have exuded scatter in the bearing and contribute to the lubrication of each part. In this manner, the fitting surface has the effect of reducing the outflow amount of the lubricant, and a small amount of the lubricant is supplied, so that the lubricant can be supplied for a long period of time.

【0008】[0008]

【実施例】【Example】

この考案の一実施例を図1ないし図3に基づいて説明する。この実施例は、円 筒ころ軸受に適用したものであり、鍔1aを有する内輪1と、鍔無しの外輪2と の間に、保持器3に保持されたころ4が組込まれている。これらのころ4のうち 、一部のもの、例えば図3に示すように1個おきのころ4Aを、図2に拡大して 示す厚肉円筒形状の中空ころとしてある。中空ころ4Aの内部空間5には潤滑剤 を充填し、両端面の開口に円板状のキャップ6を圧入してある。中空ころ4Aの 材質は、他のころ4と同様に軸受鋼等で形成してある。 An embodiment of the present invention will be described with reference to FIGS. This embodiment is applied to a cylindrical roller bearing, in which a roller 4 held by a cage 3 is incorporated between an inner ring 1 having a collar 1a and an outer ring 2 having no collar. Of these rollers 4, some, for example, every other roller 4A as shown in FIG. 3, is a thick cylindrical hollow roller shown enlarged in FIG. A lubricant is filled in the internal space 5 of the hollow roller 4A, and disc-shaped caps 6 are press-fitted into the openings on both end faces. The material of the hollow roller 4A is formed of bearing steel or the like like the other rollers 4.

【0009】 中空ころ4Aに充填する潤滑剤としては、この実施例では一般の半固体または 固体状のグリースを使用しているが、この他に、液体状グリースや、含油樹脂、 潤滑油を含ませた織布やフェルト、あるいはプラスチックグリース等を使用する ことができる。プラスチックグリースは、超高分子量ポリエチレンまたは低分子 量ポリエチレンとグリースとの混合物を適宜の温度で加熱して固形化した組成物 であり、油の滲み出しが徐々に安定的に行われるものが開発されている。As the lubricant to be filled in the hollow rollers 4A, general semi-solid or solid grease is used in this embodiment, but in addition to this, liquid grease, oil-containing resin, and lubricating oil are contained. No woven cloth, felt, or plastic grease can be used. Plastic grease is a composition in which a mixture of ultra-high-molecular-weight polyethylene or low-molecular-weight polyethylene and grease is heated and solidified at an appropriate temperature, and it has been developed that oil oozes out gradually and stably. ing.

【0010】 この構成によると、軸受の回転に伴い、中空ころ4Aの自転と公転の遠心力に より、中空ころ4A内のグリースの基油が分離する。分離した基油は、前記の遠 心力と毛細管現象とにより、キャップ6と中空ころ4Aとの嵌め合い面7を通り 、ころ端面に滲み出す。嵌め合い面7には、加工仕上げの面粗さによる凹凸のた めに微小隙間が形成されており、この隙間から前記の基油の滲み出しが行われる 。中空ころ4Aの端面に滲み出した基油は、軸受内において、鍔1aや、内外輪 1,2の転走面、保持器3等に飛散し、各部の潤滑に寄与する。With this configuration, the base oil of the grease in the hollow rollers 4A is separated by the centrifugal force of the rotation and the revolution of the hollow rollers 4A as the bearing rotates. The separated base oil passes through the fitting surface 7 between the cap 6 and the hollow roller 4A and oozes to the roller end surface due to the centrifugal force and the capillary phenomenon. A minute gap is formed on the fitting surface 7 due to the unevenness due to the surface roughness of the finished work, and the base oil exudes from this gap. The base oil oozing to the end surface of the hollow roller 4A scatters on the collar 1a, the rolling surfaces of the inner and outer races 1 and 2, the cage 3 and the like in the bearing, and contributes to lubrication of each part.

【0011】 このころ軸受は、このようにキャップ6の嵌め合い面7で潤滑剤流出量の絞り 効果が得られるため、中空ころ4A内の潤滑剤を微量ずつ供給できて潤滑寿命が 向上し、また微量潤滑のために発熱が低下する。さらに、潤滑剤の微量供給によ って高速化にも対応できる。図3では、中空ころ4Aを1個おきに組み込んだも のとしたが、中空ころ4Aの個数を変えることにより、軸受全体の潤滑剤供給量 を調整できる。In this roller bearing, since the effect of reducing the amount of lubricant outflow is obtained at the fitting surface 7 of the cap 6, the lubricant in the hollow roller 4A can be supplied in small amounts, and the lubricating life is improved. In addition, heat generation is reduced due to a small amount of lubrication. Furthermore, it is possible to cope with high speed by supplying a small amount of lubricant. In FIG. 3, it is assumed that the hollow rollers 4A are incorporated every other one, but the lubricant supply amount of the entire bearing can be adjusted by changing the number of the hollow rollers 4A.

【0012】 なお、前記実施例では嵌め合い面7の面粗さによる微小隙間から潤滑剤を滲み 出させるようにしたが、嵌め合い面7に微小な溝等を加工し、潤滑剤の流出量を 増加させるようにしても良い。 また、前記実施例では中空ころ4Aを軸受鋼からなるものとしたが、樹脂製と しても良い。このように中空ころ4Aを樹脂製とした場合、保持器3を省略した 総ころ軸受におけるスペーサ用のころに、前記の中空ころ4Aを用いることもで きる。 また、この考案は内輪鍔付きの円筒ころ軸受に限らず、外輪鍔付ころ軸受や、 鍔無しの円筒ころ軸受にも適用でき、さらに円すいころ軸受等、ころ軸受一般に 適用することができる。複列のころ軸受にも適用できる。Although the lubricant is exuded from the minute gap due to the surface roughness of the mating surface 7 in the above-described embodiment, a minute groove or the like is formed on the mating surface 7 to allow the lubricant to flow out. May be increased. Further, although the hollow rollers 4A are made of bearing steel in the above embodiment, they may be made of resin. When the hollow rollers 4A are made of resin in this manner, the hollow rollers 4A can be used as the rollers for the spacer in the full complement roller bearing in which the cage 3 is omitted. Further, the present invention is not limited to the cylindrical roller bearing with the inner ring collar, but can be applied to the roller bearing with the outer ring collar and the cylindrical roller bearing without the collar, and further to the roller bearings such as the tapered roller bearing in general. It can also be applied to double-row roller bearings.

【0013】[0013]

【考案の効果】[Effect of the device]

この考案のころ軸受は、ころを中空して潤滑剤を充填し、ころ端面の開口部に キャップを圧入したものであるため、ころの自転や公転による遠心力と、毛細管 現象とにより、ころ内の潤滑剤またはその成分が、ころの開口部とキャップとの 嵌め合い面を通って滲み出す。そのため、ころ内の潤滑剤を微量ずつ供給できて 潤滑寿命が向上し、また微量潤滑によって初期発熱を低下させることができる。 The roller bearing of the present invention is one in which the roller is hollowed and filled with a lubricant, and a cap is press-fitted into the opening of the roller end surface. The lubricant or its components ooze out through the mating surface between the roller opening and the cap. Therefore, it is possible to supply a small amount of the lubricant in the rollers to improve the lubricating life, and to reduce the initial heat generation by the small amount of lubrication.

【図面の簡単な説明】[Brief description of drawings]

【図1】この考案の一実施例にかかるころ軸受の部分断
面図である。
FIG. 1 is a partial sectional view of a roller bearing according to an embodiment of the present invention.

【図2】その中空ころの断面図である。FIG. 2 is a sectional view of the hollow roller.

【図3】図1のA−A断面図である。3 is a cross-sectional view taken along the line AA of FIG.

【符号の説明】[Explanation of symbols]

1…内輪、2…外輪、4A…中空ころ、6…キャップ、
7…嵌め合い面
1 ... Inner ring, 2 ... Outer ring, 4A ... Hollow roller, 6 ... Cap,
7… Mating surface

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 【請求項1】 内輪と外輪間に組込まれる一部または全
部のころを、潤滑剤の充填された中空ころとし、この中
空ころの端面の開口部に、嵌め合い面が潤滑剤の流出路
となるキャップを圧入させたころ軸受。
1. A part or all of the rollers assembled between the inner ring and the outer ring are hollow rollers filled with a lubricant, and the fitting surface forms a lubricant outflow passage at the opening of the end surface of the hollow roller. Roller bearing with a cap that is press-fitted.
JP3845792U 1992-05-11 1992-05-11 Roller bearing Pending JPH0592538U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3845792U JPH0592538U (en) 1992-05-11 1992-05-11 Roller bearing

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3845792U JPH0592538U (en) 1992-05-11 1992-05-11 Roller bearing

Publications (1)

Publication Number Publication Date
JPH0592538U true JPH0592538U (en) 1993-12-17

Family

ID=12525792

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3845792U Pending JPH0592538U (en) 1992-05-11 1992-05-11 Roller bearing

Country Status (1)

Country Link
JP (1) JPH0592538U (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7153030B2 (en) 2003-12-25 2006-12-26 Fanuc Ltd Rolling bearing system
JP2010510455A (en) * 2006-11-22 2010-04-02 シャエフラー カーゲー Radial roller bearings especially for wind power transmission shafts

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7153030B2 (en) 2003-12-25 2006-12-26 Fanuc Ltd Rolling bearing system
JP2010510455A (en) * 2006-11-22 2010-04-02 シャエフラー カーゲー Radial roller bearings especially for wind power transmission shafts

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